翻訳と辞書 Words near each other ・ Erysipelothrix rhusiopathiae ・ Erysipelotrichia ・ Erysiphales ・ Erysiphe ・ Erysiphe alphitoides ・ Erysiphe betae ・ Erysiphe brunneopunctata ・ Erysiphe cichoracearum ・ Erysiphe cruciferarum ・ Erysiphe flexuosa ・ Erysiphe graminis f. sp. avenae ・ Erysiphe graminis f.sp. tritici ・ Erysiphe heraclei ・ Erysiphe pisi ・ Erysiptila ・ Erysodienone ・ Erysthia ・ Erythema ・ Erythema ab igne ・ Erythema annulare centrifugum ・ Erythema chronicum migrans ・ Erythema dyschromicum perstans ・ Erythema elevatum diutinum ・ Erythema gyratum repens ・ Erythema induratum ・ Erythema marginatum ・ Erythema multiforme ・ Erythema multiforme major ・ Erythema multiforme minor ・ Erythema nodosum Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Erysodienone ： ウィキペディア英語版 Erysodienone Erysodienone is a key precursor in the biosynthesis of many ''Erythrina''-produced alkaloids.〔Rahman, Mohammed Z., et al. "Phytochemical and biological investigations of Erythrina variegata." Saudi Pharmaceutical Journal 15.2 (2007): 140.〕 Early work was done by Derek Barton and co-workers to illustrate the biosynthetic pathways towards erythrina alkaloids.〔Barton, D. H. R.; Boar, R. B.; Widdowson, D. A. J. Chem. Soc. C 1970, 1213.〕〔Barton, D. H. R.; Potter, C. J.; Widdowson, D. A. J. Chem. Soc. Perkin. Trans. 1974, 1346.〕〔Barton, D. H. R.; James, R.; Kirby, G. W.; Turner, D. W.; Widdowson, D. A. J. Chem. Soc. C 1968, 1529.〕 It was demonstrated that erysodienone could be synthesized from simple starting materials by a similar approach as its biosynthetic pathway, which lead to the development of the biomimetic synthesis of erysodienone. ==Synthesis== The biosynthesis of erysodienone involves a key step of oxidative phenol coupling. Starting with S-norprotosinomenine precursor A, cyclization via oxidative phenol coupling forms intermediate B, which in turn can be rearranged to form intermediate C. Hydrogenation of C forms the diphenoquinone intermediate E. An intramolecular Michael addition reaction converts E to the final product, erysodienone.〔 〕 A biomimetic synthesis route for erysodienone was developed based on a similar oxidative phenol coupling mechanism. Barton and co-workers〔Barton, D. H. R.; Boar, R. B.; Widdowson, D. A. J. Chem. Soc. C 1970, 1208〕 found that treating bisphenolethylamine precursor F with oxidants such as K3Fe(CN)6 initiated oxidative phenol coupling to form the 9-membered ring structure in intermediate D that itself undergo a Michael addition to give erysodienone. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Erysodienone」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.